Remove unused trigonometric code.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 4c3708ce7a5fa3387edc4431373f3a59fb157b1e..cd1af91a5b00c9cf4f39ff12fa01c428c2d3da28 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -1467,20 +1467,6 @@ void TranscendentalCacheStub::GenerateCallCFunction(MacroAssembler* masm,
   AllowExternalCallThatCantCauseGC scope(masm);
   Isolate* isolate = masm->isolate();
   switch (type_) {
-    case TranscendentalCache::SIN:
-      __ CallCFunction(
-          ExternalReference::math_sin_double_function(isolate),
-          0, 1);
-      break;
-    case TranscendentalCache::COS:
-      __ CallCFunction(
-          ExternalReference::math_cos_double_function(isolate),
-          0, 1);
-      break;
-    case TranscendentalCache::TAN:
-      __ CallCFunction(ExternalReference::math_tan_double_function(isolate),
-          0, 1);
-      break;
     case TranscendentalCache::LOG:
       __ CallCFunction(
           ExternalReference::math_log_double_function(isolate),
@@ -1497,9 +1483,6 @@ void TranscendentalCacheStub::GenerateCallCFunction(MacroAssembler* masm,
 Runtime::FunctionId TranscendentalCacheStub::RuntimeFunction() {
   switch (type_) {
     // Add more cases when necessary.
-    case TranscendentalCache::SIN: return Runtime::kMath_sin;
-    case TranscendentalCache::COS: return Runtime::kMath_cos;
-    case TranscendentalCache::TAN: return Runtime::kMath_tan;
     case TranscendentalCache::LOG: return Runtime::kMath_log;
     default:
       UNIMPLEMENTED();